I was out doing the same thing exactly but I was using H4831sc and a 29" pacnor barrel i'm exploring. My rifle likes 3.1" neat for AOL which for me is .023" off the lands. That also means I'm confined to 47.5gns of anything as my throat is shorter. 48 would be a compacted load and im not going there... 2995ft/sec is my max so far but i'm going to verify that with some long range plinking in 2 weeks. Shooting uphill 4.5 deg at 190m should have needed +.4 or .5 mils. I put that in but still hit 2 clicks high for some reason.
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